编译错误为什么！！！线下过了的...

#include <cstdio>
#include <iostream>
#include <cstring>
using std::cout;
using std::cin;

int m;
int map[310][310],lx[310][310],vis[310][310],time[310][310];
//map中的数代表该位置多久后会因陨石袭击无法通行 若值为-1表示此地是安全地点 
//lx表示此地多久后会落下流星 初值为0不影响 后面是按照陨石落点查询该数组
//vis值为1表示已经走过
//time表示到达此地所需的最短时间 
const int dx[]={0,0,1,-1,0};
const int dy[]={1,-1,0,0,0};
struct Node{
    int x,y;
}q[91000];

void bfs(int a,int b){
    int head=0,tail=1;
    q[1].x=a;q[1].y=b;vis[a][b]=1;
    while(head<tail){
        head++;
        for(int i=0;i<4;i++){
            int xx=q[head].x+dx[i];
            int yy=q[head].y+dy[i];
            //因为要在第一象限内所以横纵坐标必须都 >=0 
            if(map[xx][yy]==-1 && xx>0 && yy>0){
                cout<<time[xx][yy];
                return;
            }
            if(vis[xx][yy]!=1 && map[xx][yy]-time[xx][yy]>0 && xx>=0 && yy>=0){
                //map[xx][yy]-time[xx][yy]表示到达此地时离陨石落下摧毁此地还有多久 
                tail++;
                q[tail].x=xx;q[tail].y=yy;
                vis[xx][yy]=1;
                if(map[xx][yy]==-1 && xx>0 && yy>0){
                    cout<<time[xx][yy];
                    return;
                }
            }
        }
    }
    printf("-1");
}

int main(){
    scanf("%d",&m);
    memset(map,-1,sizeof(map));
    int x,y;
    for(int i=1;i<=m;i++){
        cin>>x>>y;
        cin>>lx[x][y];
        for(int j=0;j<=4;j++){
            if(x+dx[j]<0 || y+dy[j]<0) continue;
            if(map[x+dx[j]][y+dy[j]]>lx[x][y] || map[x+dx[j]][y+dy[j]]==-1)
                map[x+dx[j]][y+dy[j]]=lx[x][y];
        }
    }//对map初始化

    for(int i=0;i<=310;i++){
        for(int j=0;j<=310;j++){
            if(i!=0) time[i][j]=time[i-1][j]+1;
            else if(j!=0) time[i][j]=time[i][j-1]+1;
        }
    }//对time初始化 

    bfs(0,0);

    return 0;
}

/tmp/compiler_dl37x2bc/src:8:59: 错误：‘int time [310][310]’ redeclared as different kind of entity
    8 | int map[310][310],lx[310][310],vis[310][310],time[310][310];
      |                                                           ^
In file included from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/lib/gcc/x86_64-unknown-linux-gnu/9.3.0/include-fixed/pthread.h:32,
                 from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/x86_64-unknown-linux-gnu/bits/gthr-default.h:35,
                 from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/x86_64-unknown-linux-gnu/bits/gthr.h:148,
                 from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/ext/atomicity.h:35,
                 from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/bits/ios_base.h:39,
                 from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/ios:42,
                 from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/ostream:38,
                 from /nix/store/496xlqhx1mk41sdmrl58xi5y4pa0alys-luogu-gcc-9.3.0/include/c++/9.3.0/iostream:39,
                 from /tmp/compiler_dl37x2bc/src:2:
/nix/store/7rfaw11na5ajdgwr55ffzwfibbrdpk8z-glibc-2.33-56-dev/include/time.h:75:15: 附注：previous declaration ‘time_t time(time_t*)’
   75 | extern time_t time (time_t *__timer) __THROW;
      |               ^~~~
/tmp/compiler_dl37x2bc/src: 在函数‘void bfs(int, int)’中:
/tmp/compiler_dl37x2bc/src:29:18: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
   29 |     cout<<time[xx][yy];
      |                  ^
/tmp/compiler_dl37x2bc/src:29:22: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
   29 |     cout<<time[xx][yy];
      |                      ^
/tmp/compiler_dl37x2bc/src:32:44: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
   32 |    if(vis[xx][yy]!=1 && map[xx][yy]-time[xx][yy]>0 && xx>=0 && yy>=0){
      |                                            ^
/tmp/compiler_dl37x2bc/src:32:48: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
   32 |    if(vis[xx][yy]!=1 && map[xx][yy]-time[xx][yy]>0 && xx>=0 && yy>=0){
      |                                                ^
/tmp/compiler_dl37x2bc/src:32:36: 错误：操作数类型‘int’和‘time_t(time_t*) noexcept’ {aka ‘long int(long int*)’}对双目‘operator-’而言无效
   32 |    if(vis[xx][yy]!=1 && map[xx][yy]-time[xx][yy]>0 && xx>=0 && yy>=0){
      |                         ~~~~~~~~~~~^~~~~~~~~~~~~
      |                                   |            |
      |                                   int          time_t(time_t*) noexcept {aka long int(long int*)}
/tmp/compiler_dl37x2bc/src:38:19: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
   38 |      cout<<time[xx][yy];
      |                   ^
/tmp/compiler_dl37x2bc/src:38:23: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
   38 |      cout<<time[xx][yy];
      |                       ^
/tmp/compiler_dl37x2bc/src: 在函数‘int main()’中:
/tmp/compiler_dl37x2bc/src:63:19: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
   63 |    if(i!=0) time[i][j]=time[i-1][j]+1;
      |                   ^
/tmp/compiler_dl37x2bc/src:63:22: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
   63 |    if(i!=0) time[i][j]=time[i-1][j]+1;
      |                      ^
/tmp/compiler_dl37x2bc/src:63:32: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
   63 |    if(i!=0) time[i][j]=time[i-1][j]+1;
      |                                ^
cc1plus: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
/tmp/compiler_dl37x2bc/src:63:35: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
   63 |    if(i!=0) time[i][j]=time[i-1][j]+1;
      |                                   ^
/tmp/compiler_dl37x2bc/src:63:36: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
   63 |    if(i!=0) time[i][j]=time[i-1][j]+1;
      |                        ~~~~~~~~~~~~^~
/tmp/compiler_dl37x2bc/src:63:23: 错误：向只读位置‘*(time + (((sizetype)i) + ((sizetype)j)))’赋值
   63 |    if(i!=0) time[i][j]=time[i-1][j]+1;
      |             ~~~~~~~~~~^~~~~~~~~~~~~~~
/tmp/compiler_dl37x2bc/src:64:24: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
   64 |    else if(j!=0) time[i][j]=time[i][j-1]+1;
      |                        ^
/tmp/compiler_dl37x2bc/src:64:27: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
   64 |    else if(j!=0) time[i][j]=time[i][j-1]+1;
      |                           ^
/tmp/compiler_dl37x2bc/src:64:35: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
   64 |    else if(j!=0) time[i][j]=time[i][j-1]+1;
      |                                   ^
/tmp/compiler_dl37x2bc/src:64:40: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
   64 |    else if(j!=0) time[i][j]=time[i][j-1]+1;
      |                                        ^
cc1plus: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
/tmp/compiler_dl37x2bc/src:64:41: 警告：在算术表达式中使用了函数指针 [-Wpointer-arith]
   64 |    else if(j!=0) time[i][j]=time[i][j-1]+1;
      |                             ~~~~~~~~~~~~^~
/tmp/compiler_dl37x2bc/src:64:28: 错误：向只读位置‘*(time + (((sizetype)i) + ((sizetype)j)))’赋值
   64 |    else if(j!=0) time[i][j]=time[i][j-1]+1;
      |                  ~~~~~~~~~~^~~~~~~~~~~~~~~